decomposer: generate deliverable files for Define the service contract and project architecture for the FastAPI endpoint monitoring service.; Implement the typed monitor CRUD API and concurrency-safe in-memory state according to the service design.; Implement secure on-demand endpoint checks with status updates, latency measurement, robust error handling, and redacted structured logs.; Add operational API endpoints and environment-driven runtime configuration to the monitoring service.; Create automated tests for the monitoring service.; Package the service with Docker and developer documentation.; Validate the complete project.

VERIFICATION.md

@@ -1,32 +1,39 @@
 # Verification report
 
-## Commands
+## Artifact inspection
 
-The repository defines these reproducible checks:
+This repository contains the service contract, implementation, tests, dependency
+metadata, container packaging, and documentation in directly inspectable paths. The
+checker tests use `httpx.MockTransport`; they do not make external network requests.
 
-```sh
+## Execution status for this generation
-pip install -e '.[dev]'
+
+The generation platform exposed repository scaffolding/commit and file-inspection
+operations, but no command runner or Docker daemon. Therefore the following commands
+were **not executed here**, and no passing result is claimed:
+
+```bash
+ruff format --check .
 ruff check .
 mypy app
-pytest -q
+pytest
-docker build -t endpoint-monitor:local .
+docker build -t endpoint-monitor .
-docker run --rm -p 8000:8000 endpoint-monitor:local
+docker run --rm -d -p 8000:8000 --name endpoint-monitor endpoint-monitor
-curl -fsS http://127.0.0.1:8000/health
+curl --fail http://127.0.0.1:8000/health/live
-curl -fsS http://127.0.0.1:8000/ready
+curl --fail http://127.0.0.1:8000/health/ready
+docker rm -f endpoint-monitor
 ```
 
-Generation occurred through the repository scaffold platform. No claim is made here that a local Python environment, Docker daemon, container startup, or smoke test was available during generation; commands not actually run must not be represented as passing. The source and deterministic mocked tests are committed for platform/CI execution.
+They are the required validator sequence. A validator with a Python 3.12 environment
+and Docker should execute them and record stdout, versions, and image digest. Static
+review confirms each required artifact is present, but it is not a substitute for
+execution.
 
-## Inspectable requirement evidence
+## Known operational limitations
 
-* bounded total/connect/read timeout and error mapping: `app/checker.py`, `test_total_timeout_is_mapped_without_leaking_exception`
+State is memory-only and disappears on process exit. The lock coordinates coroutines
-* every redirect re-enters resolution/policy before fetch: `EndpointChecker.check`, `test_redirect_hop_is_resolved_and_blocked_before_second_fetch`
+inside one process only. The container intentionally starts one worker; multiple
-* all DNS answers classified and mixed answers rejected: `app/security.py`, parametrized and mixed-answer security tests
+workers or replicas do not share monitors. DNS is checked on each redirect hop, while
-* rebinding defense: validated addresses flow into `PinnedResolver` and a fresh per-hop `TCPConnector`; the pin/host rejection is tested
+network egress policy remains necessary to close DNS-rebinding/TOCTOU risk fully. No
-* atomic status update: revision snapshot plus locked `set_status_if_current`; stale/concurrent tests
+authentication, scheduler, persistence, or cross-process readiness dependency is in
-* latency and stable, non-exception error messages: `EndpointChecker.check` and timeout test
+scope.
-* query/userinfo/fragment redaction: `redact_url`, `JsonFormatter`, and log test
-
-## Limitation
-
-Storage is process-local and volatile. One worker is mandatory; restart loses data and replicas do not coordinate. Docker is configured accordingly.